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Add a parameter to disable host cache, by Laurent Vivier.

Browse source 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4836 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2008-07-03 11:47:46 +00:00
parent 23fb600b87
commit 2f7264888a
6 changed files with 40 additions and 24 deletions
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14
nbd.c
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@ -404,13 +404,9 @@ int nbd_client(int fd, int csock)
return ret;
}
int nbd_trip(BlockDriverState *bs, int csock, off_t size, uint64_t dev_offset, off_t *offset, bool readonly)
int nbd_trip(BlockDriverState *bs, int csock, off_t size, uint64_t dev_offset,
off_t *offset, bool readonly, uint8_t *data, int data_size)
{
#ifndef _REENTRANT
static uint8_t data[1024 * 1024]; // keep this off of the stack
#else
uint8_t data[1024 * 1024];
#endif
uint8_t buf[4 + 4 + 8 + 8 + 4];
uint32_t magic;
uint32_t type;
@ -449,9 +445,9 @@ int nbd_trip(BlockDriverState *bs, int csock, off_t size, uint64_t dev_offset, o
return -1;
}
if (len > sizeof(data)) {
LOG("len (%u) is larger than max len (%lu)",
len, (unsigned long)sizeof(data));
if (len > data_size) {
LOG("len (%u) is larger than max len (%u)",
len, data_size);
errno = EINVAL;
return -1;
}